__kernel void reconstruct(  	__write_only image2d_t backbuffer,
                            	__global float4* traceResult,
   				const int num,
				const int w,
				const int h)
{
    	int idx = get_global_id(0);

    	if(idx < num)
    	{
        	int2 coord = (int2)(idx % w, idx / w);
        	float4 barycentric = traceResult[idx];
        	barycentric.z = 1.0 - barycentric.x - barycentric.y;
        	barycentric.w = 1.0;
        	write_imagef(backbuffer, coord, barycentric);
    	}
}